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Business Combinations - Summary of Business Divestments Transactions (Detail) | 12 Months Ended
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Dec. 31, 2024
IoT [Member] |
Disclosure Of Business Divestitures [Line Items] |
Divestments, Description | IoT accelerator and connected vehicle cloud businesses and related assets.
Business Divestments, transaction date | Mar 1 2023
Aerialink [Member] |
Disclosure Of Business Divestitures [Line Items] |
Divestments, Description | A US based company providing premier messaging solutions for business to business communications.
Business Divestments, transaction date | Nov 1 2022

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- Definition Date of divestments. + References No definition available. + Details
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- Definition Description of divestments. + References No definition available. + Details
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- Definition Disclosure of detailed information on business divestitures. + References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=eric_AerialinkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |